test(traefik): add tests for punycode conversion of Russian IDNs

- Added tests to verify the conversion of Russian Cyrillic domains and subdomains with IDN TLDs to punycode format, ensuring proper handling in router configurations.
- Confirmed that non-ASCII parts are correctly converted while ASCII parts remain unchanged.

apps/dokploy/__test__/traefik/traefik.test.ts

@@ -299,3 +299,27 @@ test("ASCII domain remains unchanged", async () => {
 
 	expect(router.rule).toContain("Host(`example.com`)");
 });
+
+test("Russian Cyrillic label with .ru TLD is converted to punycode", async () => {
+	const router = await createRouterConfig(
+		baseApp,
+		{ ...baseDomain, host: "сайт.ru" },
+		"web",
+	);
+
+	// сайт in punycode is xn--80aswg
+	expect(router.rule).toContain("Host(`xn--80aswg.ru`)");
+	expect(router.rule).not.toContain("сайт");
+});
+
+test("Subdomain with Russian IDN TLD converts non-ASCII part to punycode", async () => {
+	const router = await createRouterConfig(
+		baseApp,
+		{ ...baseDomain, host: "app.тест.рф" },
+		"web",
+	);
+
+	// app stays ASCII, тест.рф becomes xn--e1aybc.xn--p1ai
+	expect(router.rule).toContain("Host(`app.xn--e1aybc.xn--p1ai`)");
+	expect(router.rule).not.toContain("тест.рф");
+});